I totally agree...I may have misunderstood your comment....
Could be. By “disruptive,” I meant getting in people’s way, blocking access to their classes or offices, threatening people.
One doesn’t want the whole university plastered with signs, or the grounds littered by handouts. Consistent with general tidiness, however, signs or handouts are nothing, unless they are specific threats on the order of, “We’re going to kill all the infidels on Friday.”